EP1593440A2 - Dispositif de raclage - Google Patents

Dispositif de raclage Download PDF

Info

Publication number
EP1593440A2
EP1593440A2 EP05102326A EP05102326A EP1593440A2 EP 1593440 A2 EP1593440 A2 EP 1593440A2 EP 05102326 A EP05102326 A EP 05102326A EP 05102326 A EP05102326 A EP 05102326A EP 1593440 A2 EP1593440 A2 EP 1593440A2
Authority
EP
European Patent Office
Prior art keywords
doctor
hose
additional element
clamping device
opening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP05102326A
Other languages
German (de)
English (en)
Other versions
EP1593440A3 (fr
EP1593440B1 (fr
Inventor
Eckard Wozny
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Patent GmbH
Original Assignee
Voith Patent GmbH
Voith Paper Patent GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Voith Patent GmbH, Voith Paper Patent GmbH filed Critical Voith Patent GmbH
Publication of EP1593440A2 publication Critical patent/EP1593440A2/fr
Publication of EP1593440A3 publication Critical patent/EP1593440A3/fr
Application granted granted Critical
Publication of EP1593440B1 publication Critical patent/EP1593440B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/04—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades
    • B05C11/044—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades characterised by means for holding the blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/04—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades
    • B05C11/041—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades characterised by means for positioning, loading, or deforming the blades
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G3/00—Doctors

Definitions

  • the invention relates to a squeegee device for means for applying liquid to pasty media on a running surface with a against the Surface pressing doctor element for dosing and / or homogenization of the applied medium and with the squeegee element holding Clamping device, a first pressurizable hose for Close and a second pressurizable hose to open the Chuck.
  • FIG. 1 For better understanding. She has one Clamping device 11, in which a not shown here squeegee element between a support bar 12 and a guide bar 13 can be clamped. To the Clamping of the doctor element, not shown, a first tube 14 with a Pressure, in particular pressurized air, whereby the tube 14 expands and the support bar 12 and the guide rail 13 in the clamping area E, in which the Squeegee element is to be held, clash. To open the Clamping device 11 serves a second parallel and by a Retaining strip 16 of separate hose 15. If this is under pressure it expands and the first tube is relieved, i. the first Hose 14 is compressed.
  • a Pressure in particular pressurized air
  • the clamping device 11 To change the doctor element is the clamping device 11 only opened to an intermediate position.
  • This is the second tube 15 with a certain pressure which is less than the maximum Pressure, as far as expanded to balls 17 by means of springs 18 in recesses 19th be pressed.
  • An edge 19 a of the recesses 19 prevents the Clamping device 11 for changing the doctor element via the intermediate position can be opened out when the lower pressure is applied.
  • the second tube 15 is at the maximum pressure acted upon, so that the balls 17 over the edge 19 a of the recesses 19th be pushed out.
  • the squeegee device 10 requires a pressure control for the second tube 15 to the clamping device 11 to the intermediate position to open. This requires a certain amount of control. Furthermore require the holes for receiving the springs 18 and the recesses 19th a certain amount of space.
  • the springs 18 and the balls 17 are mechanically stressed components that can wear out over time, wherein the springs 18 also to a function impairing pollution tend. Over time, when closed, the Clamping device 11 by the punctiform load of the balls 17th form unwanted depressions in the support bar 12.
  • the invention has the object of the doctor device of the type mentioned be improved so that the disadvantages mentioned avoided in the future become.
  • the invention solves the problem by a squeegee device of the beginning mentioned type according to the invention with an additional element for opening the Clamping device is equipped.
  • This additional element has a less stroke than the second hose available for opening.
  • the additional element actuated, the stroke as I said, is less than the stroke of the hose.
  • the second hose which is also referred to as opening hose, actuated, and the first tube, i. the clamping tube relieved.
  • opening hose which is also referred to as opening hose, actuated
  • first tube i. the clamping tube relieved.
  • the additional element may be elastic be deformable. Consequently, when closing the clamping device be compressed, and when opening the chuck back in reset its original shape.
  • the additional element realize, if it is also designed as a hose.
  • the additional element and / or the hose can be attached to an existing one Compressed air supply connected and to open the clamping device with Compressed air are applied.
  • the clamping device can be with little Open design effort, with existing already Utilities can be used.
  • the additional element can only one be elongated rubber strip.
  • the rubber strip is naturally elastic deformable. If the clamping hose is vented, this causes elastic Rubber strips by its rebound that the clamping, i. the Clamping device opens a small defined piece. This little piece Opening width is completely sufficient for changing the doctor element. Consequently the rubber strip a structurally particularly simple and therefore cost-effective Solution dar. For this alternative, foam rubber has been well proven.
  • the additional element in the arranged to open the clamping device provided second hose.
  • the additional element through the surrounding hose protected.
  • the additional element has only a total size of maximum 1/3 of the opening hose.
  • the additional element can be retrofitted. Then you can too existing doctoring devices with the advantages of the invention Squeegee device to be equipped.
  • the invention relates to offline or online (i.e. Manufacturing machine, i. Paper machine for a fibrous web) operated Coater.
  • This coating device according to the invention has a Doctor device according to one of claims 1 to 8 and is for the one-sided or two-sided, direct or indirect coating of a running fibrous web, in particular of paper or cardboard with a liquid to pasty medium intended. The coating is used to refine the fibrous web made good printing properties for later printing in To reach printing presses.
  • FIG. 2 shows a doctor device 20 with a clamping device 21.
  • a doctor element 22 in the form of a machine-wide coating blade, is held in the example shown.
  • the clamping device 21 has a support strip 23 and a guide rail 24. Between the guide rail 24 and a retaining strip 25 is acted upon by compressed air first hose 26 for closing the clamping device 21 is arranged. Between the retaining strip 25 and a base body 27 there are a second hose 28 and also formed as a hose additional element 29. The additional element 29 is placed inside the hose 28.
  • the jig 21 holds the squeegee element 22
  • the second tube 28 and the additional element 29 are compressed.
  • the clamping device 21 can be opened. When opening the clamping device 21, however, the first tube 26 is pressed together.
  • the clamping device 21 of the doctor device 20 is opened and the squeegee element 22 is already removed, for example, to be replaced with a squeegee element with newly ground tip.
  • the clamping device 21 only has to be opened slightly.
  • the additional element 29 is acted upon by compressed air, whereby the retaining strip 25 and thus the support bar 23 are moved by a relatively small stroke.
  • the second tube 28, which surrounds the additional element 29, need not be pressurized with compressed air to change the doctor element 22.
  • the hose 28 which has a diameter which is several times greater than the hose-like additional element 29, is pressurized with compressed air.
  • the retaining strip 25 and the support strip 23 are moved by a large stroke.
  • the additional element 29 does not have to be subjected to compressed air for cleaning work.
  • the additional element 29 does not have to be formed like a tube, but can also be an elongated rubber strip.
  • This elongated rubber strip is elastically deformable and opens to change the doctor element 22 with his Restoring force the clamping device 21, once in the tube 26 of the therein prevailing pressure is reduced.
  • the additional element 29 may also be next to it be arranged along the hose 28.
  • the strokes of the add additional element 29 and the hose 28, so that the hose 28th smaller can be dimensioned to the doctor device 20 to Cleaning purposes with a large stroke to open.
  • the doctor device according to the invention is used for devices for applying liquid to pasty media on a running surface O.
  • this surface O is shown only in FIG. 2 and represents a running paper, board or other fibrous web when the application medium is directly applied.
  • the surface O is a transfer element, for example an applicator roll or a circulating belt Transfer element then transfers the application medium to the moving fibrous web in a so-called nip.
  • the squeegee element 22 which presses against the surface O serves for metering and / or equalizing the applied medium and, as shown in FIG. 2 , can be designed as a doctor blade.
  • the doctor element 22 can also be a rotatable grooved or smooth doctor bar which is accommodated in a doctor bed, which in turn is supported on a blade-like foot (formed approximately in the same way as the doctor blade of FIG. 2).

Landscapes

  • Paper (AREA)
  • Coating Apparatus (AREA)
EP05102326A 2004-04-17 2005-03-23 Dispositif de raclage Expired - Lifetime EP1593440B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004018770A DE102004018770A1 (de) 2004-04-17 2004-04-17 Rakelvorrichtung
DE102004018770 2004-04-17

Publications (3)

Publication Number Publication Date
EP1593440A2 true EP1593440A2 (fr) 2005-11-09
EP1593440A3 EP1593440A3 (fr) 2010-12-22
EP1593440B1 EP1593440B1 (fr) 2012-05-09

Family

ID=34939051

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05102326A Expired - Lifetime EP1593440B1 (fr) 2004-04-17 2005-03-23 Dispositif de raclage

Country Status (3)

Country Link
EP (1) EP1593440B1 (fr)
AT (1) ATE556787T1 (fr)
DE (1) DE102004018770A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1789628B2 (fr) † 2004-08-21 2011-01-12 Voith Patent GmbH Dispositif de raclage
CN104582862A (zh) * 2012-06-11 2015-04-29 Btgipi有限公司 用于计量装置的插入件和保持架

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103861768B (zh) * 2014-03-29 2016-08-17 周午贤 一种自适应高度型电梯导轨涂漆装置
US12377469B2 (en) 2021-03-02 2025-08-05 General Electric Company Recoater for additive manufacturing

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8232839U1 (de) * 1982-11-23 1984-06-14 Jagenberg AG, 4000 Düsseldorf Vorrichtung zum beschichten laufender materialbahnen
US4789432A (en) * 1987-06-08 1988-12-06 Thermo Electron Web Systems, Inc. Doctoring apparatus
FI91367C (fi) * 1990-12-13 1994-06-27 Valmet Paper Machinery Inc Taipumakompensoitu teräpalkki
DE4334555C2 (de) * 1993-10-11 2003-06-26 Jagenberg Papiertech Gmbh Halterung für eine Rakelstange
DE4341341C1 (de) * 1993-12-06 1995-03-09 Jagenberg Ag Dosiersystem für Vorrichtungen zum Beschichten von Materialbahnen, insbesondere Papier- oder Kartonbahnen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1789628B2 (fr) † 2004-08-21 2011-01-12 Voith Patent GmbH Dispositif de raclage
US8082875B2 (en) 2004-08-21 2011-12-27 Voith Patent Gmbh Doctor device
CN104582862A (zh) * 2012-06-11 2015-04-29 Btgipi有限公司 用于计量装置的插入件和保持架

Also Published As

Publication number Publication date
EP1593440A3 (fr) 2010-12-22
EP1593440B1 (fr) 2012-05-09
ATE556787T1 (de) 2012-05-15
DE102004018770A1 (de) 2005-11-03

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